| 第 50 卷第 3 期 |  | Vol. 50 No. 3 | | 2020 年 6 月 | Jun 2020 |
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所屬欄目：功能材料
泡沫鎳上原位合成硒化鎳與電解水性能研究 |
| 楊海華，蔣令杰，閻建輝，張 麗*
（湖南理工學(xué)院 化學(xué)化工學(xué)院，湖南省先進(jìn)碳基功能材料重點(diǎn)實(shí)驗室，湖南 岳陽(yáng) 414006） |
| 摘 要：過(guò)渡金屬硒化物已被認為是一類(lèi)極具發(fā)展前景的電解水催化劑。以泡沫鎳為基底和鎳源，通過(guò)一步水熱法在泡沫鎳上負載硒化鎳制備電催化劑（記為Ni-Se@NF）。掃描電鏡圖表明，在泡沫鎳表面原位生長(cháng)合成了一層納米顆粒；X射線(xiàn)衍射和X射線(xiàn)光電子能譜表征證明該層納米顆粒為Ni0.85Se和Ni3Se2。在1 mol·L-1 KOH電解質(zhì)中，對Ni-Se@NF電極進(jìn)行了雙催化電解水性能測試。Ni-Se@NF電極的析氫電流密度10 mA·cm-2時(shí)的超電勢為153 mV，析氧電流密度50 mA·cm-2時(shí)的超電勢為340 mV，并表現出良好的穩定性。 |
| 關(guān)鍵詞：硒化鎳；泡沫鎳；電解水；析氫反應；析氧反應 |
| 中圖分類(lèi)號：O643 文獻標識碼：A 文章編號：1009-9212（2020）03-0047-05 |
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| In Situ Synthesis of Nickel Selenide on Ni Foam for Electrocatalytic Water Splitting |
| YANG Hai-hua, JIANG Ling-jie, YAN Jian-hui, ZHANG Li*
(Key Laboratory of Hunan Province for Advanced Carbon-based Functional Materials, School of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China) |
| Abstract：Transition metal selenides have attracted extensive attention as promising electrocatalysts for water splitting. Herein, the direct growth of nickel selenide on nickel foam (denoted as Ni-Se@NF) was demonstrated via a simple one-step hydrothermal approach. A film layer composed of nanoparticles was observed by scanning electron microscope, which was further demonstrated as Ni0.85Se and Ni3Se2 by X-ray diffraction and X-ray photoelectron spectroscopy. The as-obtained Ni-Se@NF was applied as electrodes for bifunctional water splitting in 1 mol·L-1 KOH, demanding a low overpotential of 153 mV to achieve the current density of 10 mA cm2 for HER, a small overpotential of 340 mV to achieve the current density of 50 mA·cm-2 for OER, as well as good stability. |
| Key words：nickel selenide; nickel foam; electrocatalytic water splitting; hydrogen evolution reaction; oxygen evolution reaction |
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基金項目：湖南省自然科學(xué)基金項目（2019JJ50206），湖南省教育廳科學(xué)研究項目（19B230）。
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作者簡(jiǎn)介：楊海華（1983-），男，湖南隆回人，高級工程師，博士，研究方向：無(wú)機功能材料（E-mail：hhyang@126.com）。
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聯(lián) 系 人：張 麗，教授，研究方向：無(wú)機功能材料（E-mail：hgx.zl@163.com）。
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收稿日期：2020-05-18
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